Description
When the stable-i686-pc-windows-gnu toolchain's bin directory is at the beginning of the PATH variable (as will happen when using rustup), MSYS2 x86 gcc versions 11.3 and higher fail.
This can be reproduced
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on the MSYS2 MinGW x86 terminal
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install mingw-w64-i686-gcc package version 11.3 or higher (I tested with 11.3.0-2)
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include the toolchain's bin directory at the beginning of the PATH, for example with
PATH="/c/Users/User/.rustup/toolchains/1.38.0-i686-pc-windows-gnu/bin:$PATH" -
try to compile a simple c file, for example
gcc a.cwith a.c containing onlyint main () { return 0; }
No a.exe is generated. Repeating with gcc version 11.2 (I tested with 11.2.0-9) will generate a.exe.
With the latest MSYS2 gcc (12.1.0-3) the problem is still there with no a.exe generated.
If libgcc_s_dw2-1.dll is removed from the toolchain's bin directory, a.exe is generated.
(I first thought it was a rustup 1.25 issue and opened rust-lang/rustup#3045, but then I realized the issue is here, or maybe in MSYS2/gcc.)